eth-event-megaphone

Whenever a solidity event fires in an Ethereum smart contract, we can harness it, and broadcast it to all of the contract followers using PubNub.

When a new Crowdsale is launched like in this contract, this node.js script can be used to signal to every investor's web browser that the sale has opened, display the buy button UI, and profit $$$.

// Build an ABI using the Truffle framework and Solidity, provide the JSON to this script

let TokenContractABI = web3.eth.contract(ContractBuild.abi);

let TokenContract = TokenContractABI.at('__YOUR_CONTRACT_ADDRESS__');

let crowdsaleDeployedEvent = TokenContract.CrowdsaleDeployed();

crowdsaleDeployedEvent.watch(function(error, result){
  publishMessage(result);
});

PubNub also provides API's for history, APNS, Functions, and more to send every flavor of signal to your customers.